Self-threading shuttle for looms for weaving.



D. M. HOLLINS.

' SELF THREADING SHUTTLE FOR LOOMS FOR WEAVING.

APPLICATION FILED MAY 20, 1911.

1,091,432. Patented Mar. 24, 1914.

TINTTED STATES PATENT OFFICE.

DENIS MACHELL HOLLINS, OF BLACKBURN, ENGLAND, ASSIGNOR TO DRAPER COM-PANY, OF IIOPEDALE, MASSACHUSETTS, A CORPORATION OF MAINE.

SEIE-THBEADING SHUTTLE FOR LOOMS FOR WEAVING.

Specification of Letters Patent.

Application filed May 20, 1911.

To oZZ whom it may concern:

Be it known that I, Dnms MAGHELL Hon LINS, a subject of King George V ofGreat Britain, residing at Blackburn, in count-y of Lancaster, England,have invented certain new and useful Improvements in Self- ThreadingShuttles for Looms for Veaving, of which the following is aspecification.

This invention relates to self-threading shuttles for looms, and has forits object the provision of simple and eflicient means for preventing orreducing to a minimum the wear on certain parts of the shuttle due tothe friction of the yarn passing thereover.

In self-threading shuttles for automatic looms, and it is to these thatmy invention particularly relates, there is provided a metal block orthreading device suitably designed to automatically assume control ofthe thread as the shuttle is thrown across the loom, and first cause itsintroduction into a longitudinal thread passage and thence by means of ahorn, as it is termed, through an entrance slot into a laterallyextending or side delivery eye. It is usual to provide a shuttle of thistype with steel pins, one at each side of the outer end of the deliveryeye, for the purpose of resisting the Wear of the thread on the wood ofthe shuttle and for the same purpose, at the inner end of the deliveryeye, the threading device has been provided with a steel guide pin orprong around which the thread draws when its direction is changed tocause it to pass from the longitudinal thread passage to the deliveryeye. Then using such shuttles with certain classes of yarn, moreespecially woolen or worsted or other coarse yarns, it has been foundthat the eye pins and the guide pin or prong referred to wear veryrapidly, so that in a short time thev become so cut and scored as torender the shuttle useless. There have been other attempts to overcomethe difliculty, one de vice for the purpose being shown and de-- scribedin the specification of British Patent No. 11412 of 1906, according towhich there was placed in a recess formed in the shuttle at the innerend of the delivery eye, a block of porcelain, glass, or other similarvitreous material having an upturned guide prong and upright abutmentsto present an eye and slot to register with the slotted delivery eye andcause the wear of the thread to be transferred from the wood to suchwear resisting block.

According to my present improvements, I dispense with the use of a steelguide prong and wear pins as in the prior patent referred to, and I alsoemploy vitreous wear resisting surfaces, which however are formed andapplied in a novel manner and are simpler and better adapted for coarseyarns than the previous construction.

In describing my invention, I shall refer to the accompanying drawings,in which Figure l is a plan view of part of a shuttle, the threadingdevice of which embodies my improvements; Fig. 2 is a side elevationlooking in the direction of the arrow A, Fig. 1, and Fig. 3 is atransverse section taken as on the line B-B, Fig. 2, looking in thedirection of the arrow C, same figure.

Referring to the drawings, 1 represents the shuttle, 2 the bobbin recesstherein, and 3 the threading device which may be of any well knownsuitable construction and in the instance shown comprises a metal blockhaving a longitudinal thread passage 5 therein into which the threadfirst passes and from whence it is guided by a horn 6 through anentrance slot 7 into the laterally extending side delivery eye 8, in theusual and well known manner.

According to my present invention, I form along one side of the deliveryeye 8, a lateral undercut recess 8 in which is secured by cement or thelike, a block 9 of porcelain, glass, or similar material having asmooth, glazed, and very hard surface, vitreous in character, andpossessed of suflicient toughness to withstand the blows to which theshuttle is subjected. The block may be further secured in position bymeans of a pin 10 driven vertically into the wood of the shuttle andengaging in a vertical notch or recess in the back of the block, as willbe understood by an examination of Figs. 1 and 2. The block 9 forms oneside of the delivery eye 8 and is suitably curved along its'inner faceas at 9 and at its outer end 9 to guide the yarn with a minimum offriction. The inner end 9" of the block, which is also suitably curvedor rounded ott', projects beyond the inner end of the delivery eye 8into the longitudinal thread passage 5 of the threading device, andterminates at or substantially at the longitudinal axis of the shuttle,the end 9 of the block thus occupying the position usually occupied bythe steel guide pin or post in the ordinary constructions of shuttles ofthis type.

The wall of the longitudinal thread passage 5 is provided or formed withan inwardly extending inclined or curved shield or cover 5 which extendsimmediately above and beyond the inwardly projecting end 9 of the block9, and guides the thread, as the latter is drawn into the thread passageon the shuttle being thrown across the loom, into proper position aroundthe said end 9 of the block. As the thread is drawn off, therefore, itdraws around the curved inner end 9 of the block 9 into the delivery eye8, along the hollowed out or curved face 9, and passes out of thedelivery eye 8 around the curved outer end 9 of the block. The oppositeside of the delivery eye 8 is formed with an undercut recess 8 in whichis secured, by cement or the like, a block 11 of porcelain or similarvitreous wear resisting material having its inner face suitably curvedor hollowed out and its ends suitably curved to guide the thread, whenthe shuttle is thrown in the opposite direction, from the curved innerend 9 of the block 9 to the outer end of the delivery eye 8.

The block 11 may, if desired, be further secured in position by avertical pin in the same manner as has already been described withreference to the block 9.

The shape of the blocks 9 and ll and of the shield or cover 5 in thethread passage 5 may be varied according to the particular constructionof shuttle and threading device or to suit requirements.

Having thus described my invention, what I claim and desire to secure byLetters Patent is 1. In a self-threading shuttle for looms, thecombination of a shuttle body and a threading device having alongitudinal thread passage, of a non-metallic guide block extendingtransversely of the shuttle body and having its inner end extending intothe longitudinal thread passage and beyond the wall thereof to form anon-metallic guide for the thread in its travel from the bobbin, and ashield or cover extending into the thread passage beyond the end of thenonmetallic guide block to guide the thread over the end of the guideblock as the shuttle is threaded and to a position below the edge of theshield or cover that the thread may normally bear only on thenon-metallic guide block as it is drawn from the shuttle during weaving.

2. In a self-threading shuttle for looms, the combination of a shuttlebody and a threading device having a longitudinal thread passage, of anon-metallic guide block extending transversely of the shuttle body andhaving its inner end extending into the longitudinal thread passage andbeyond the wall thereof to form a nonmetallic guide for the thread inits travel from the bobbin, and a shield or cover extending into thethread passage beyond the end of the non-metallic guide block to uidethe thread over the end of the guide block as the shuttle is threadedand to a position below the edge of the shield or cover that the threadmay normally bear only on the non-metallic guide block as it is drawnfrom the shuttle during weaving, the outer end portion of saidnon-metallic block having a rounded surface forming one wall of thedelivery eye, and a non-metallic block forming the opposite wall of thedelivery eye.

3. In a self-threading shuttle for looms, the combination of a threadingblock having sage, and a Vitreous thread guide disposed transversely ofthe threading block and having its inner end extending into thelongitudinal thread passage and beyond the adj acent wall thereof, and ashield projecting downward from a point above the inner portion of thevitreous guide and having a lower edge portion extending into thelongitudinal thread passage above the lower portion of the thread guideand normally above and out of contact with the thread leading from thebobbin, said vitreous guide forming one side wall of the delivery eyeand a separate vitreous block forming the opposite side wall of saideye.

a longitudinally extending thread pas- 4:. A shuttle having a deliveryeye and a self-threading device providing a longitudinal thread-passage,a vitreous thread guide having its inner end projecting into thelongitudinal thread passage to engage the thread as it is drawn from thebobbin and furnishing the guiding means for the thread as it moves fromthe longitudinal passage to the delivery eye, and a shield extendingtransversely from one side of the longitudinal thread passage and havingits lower edge portion in the thread passage opposite to and crossingthe inner end of the vitreous thread guide above the normal position ofthe thread.

5. A self-threading shuttle for looms, having a threading deviceprovided with a longitudinal thread passage, and an undercut laterallyextending recess, a vitreous block having a rounded end projectingbeyond the wall of the laterally extending recess into the longitudinalpassage to afford a non-metallic guide for the thread in its travel fromthe bobbin, and having also an open face portion directed toward the endof the shuttle, and an outer rounded portion at the delivery eye, and ashield extending into the longitudinal thread passage to guide thethread to said vitreous block as the shuttle is threaded, the edge ofsaid guide being normally above and out of contact with the thread as itis drawn from the bobbin during weaving.

6. A shuttle having a self threading de vice providing a longitudinalthread passage, a vitreous thread guide extending transversely of theshuttle with its inner end beyond the adjacent wall of and extended intothe longitudinal passage and having an open bearing portion facingtoward the end of the shuttle, a shield extending clownward into thelongitudinal thread passage from above and extending beyond the innerend of the vitreous thread guide, the lower 15 edge of said shieldcrossing the inner end of said Vitreous guide in the longitudinal threadpassage above the thread after the shuttle has been threaded.

In, testimony whereof I aifix my signa- 20 ture in the presence of twowitnesses.

DENIS MAOHELL HOLLINS.

WVitnesses:

ERNALD SIMPSON MOSELEY, MALCOLM SMETHURST.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

